JP6248258B1 - Joint and manufacturing method thereof - Google Patents

Abstract

To provide a joint that can be easily and quickly manufactured and that is excellent in handling properties, and a method for manufacturing the joint. A joint 10 having a plurality of connecting portions to which beams are connected, and outer peripheral surfaces 21 of connecting portion forming portions 20, 20a, 20b on which the connecting portions are formed are flat surfaces, The joint 10 is characterized in that the outer peripheral surfaces 21 of the adjacent connecting portion forming portions are adjacent to each other via a mountain-folded ridge portion 23 toward the outside. The outer surface 21 is the outermost peripheral surface of the joint 10, and when the beam 50 is connected to the outer surface 21, the beam 50 whose end surface at the connecting end of the beam 50 is larger than the outer surface 21 can be connected. [Selection] Figure 2

Description

  The present invention relates to a joint used in a building structure, and more particularly to a joint used in a connecting portion between beams in a truss structure.

Conventionally, there is a spherical joint as a joint used in a truss structure or the like. Polygonal objects have been proposed (see Patent Document 1 and Patent Document 2) .

Japanese Utility Model Publication No.59-58103 Japanese Utility Model Publication No.59-58102

  However, the conventional polygonal joint takes time to manufacture, and the handling property when actually used and the workability when constructing the truss are poor.

  This invention is made | formed in view of such a problem, and makes it a subject to provide the joint which can be manufactured easily and rapidly, and is excellent also in the handleability, and its manufacturing method.

The invention according to the present application is a joint including a plurality of connecting portions to which the connected members are connected, and the outer peripheral surface of each connecting portion forming portion in which each connecting portion is formed is mountain-folded outward. through the ridge, it is a joint which is characterized in that it is tangent to the outer peripheral surface of the coupling portion forming portion adjacent.

The joint is formed by combining a plurality of parts by welding, and the welding position is the position of the ridge.
Since the joint of the present invention has a simple structure in which a plurality of joints are combined by bending and welding, the joint can be easily and quickly manufactured, and is excellent in handleability.

And it further comprises an internal space surrounded by a plurality of the coupling portion forming portions, and a through hole communicating with the internal space from the outside of the joint, and the inner surface on the back side of the outer peripheral surface of each coupling portion forming portion is is visible from di Yointo outside.

There are a plurality of the through holes, and the inner side surfaces of all the connecting portion forming portions can be visually recognized from any through hole .

Another invention according to the present application is such that a connecting member used for connecting the joint and the connected member can be attached to the connecting portion of the joint described above, and the connected member is used using the connecting member. When the member is connected to the joint, the joint portion between the two is visible, and the joint portion includes a joint hole, and the male screw portion protrudes from the inside to the outside of the joint hole. A bolt attached to the coupling hole, an elastic body that is extrapolated to the male threaded portion of the bolt, and a screw that is screwed onto the male threaded portion in a state that the elastic body can be pressed against the outer peripheral surface of the coupling portion forming portion A connecting end provided in the member to be connected to the male screw portion into which the nut in a state of pressing the elastic body against the outer peripheral surface is screwed. Twist Inclusive, tightening can fix the coupling end part to the joint by tightening the connecting end portion is brought into contact with the nut, a di Yointo assembly.
The coupling portion includes a coupling hole, and a bolt that can be attached to the coupling hole in a state where the male screw portion protrudes from the inside to the outside of the coupling hole, and a screw threaded on the male thread portion of the bolt. The connecting member includes a nut that can be inserted, and an insertion hole of a connecting end included in the connected member is externally inserted into the male screw portion of the bolt inserted into the coupling hole. The joint assembly may be configured such that the connecting end portion is fastened and fixed to the joint by screwing the nut into the distal end portion of the male screw portion penetrating the insertion hole.

  Still another invention according to the present application is a method for manufacturing a joint including a plurality of coupling portions to which connected members are connected, and a blank material manufacturing process for preparing a plate-shaped blank material, and a plurality of prepared A bending process for producing a joint part by bending the blank material, a coalescence process for producing a joint by combining a plurality of the joint parts, and a joint part forming process for forming the joint part. There are two blank materials, and the bending step is performed so that all the mountain fold structures appear on one outer surface side of the blank material, and the joint portion is formed. A joint part having a plurality of parts, wherein the joint part forming part of each joint part has a flat inner surface and outer peripheral surface, and each joint part is adjacent to each other. The outer peripheral surface of the formed part is adjacent to the outside via a ridge part of a mountain fold, and the coalescing step is a step of welding the outer peripheral edges of the two joint parts, and the coalescing step is A process performed in a state in which the two joint parts are combined so that an internal space surrounded by the two joint parts is formed and the welded part of both joint parts becomes a ridge part of a mountain fold toward the outside. The coupling part forming step is a method for manufacturing a joint, which is a process of forming the coupling part in the coupling part forming part.

Each of the two blank materials has the same shape and has one outer surface and the other outer surface of the same shape, and the bending step is such that valley folding appears on one outer surface of one blank material. A step of manufacturing one joint part by bending, and a step of manufacturing the other joint part by bending so that a valley fold appears on the other outer surface of the other blank member.
Further, the bending step is a step of manufacturing the two joint parts having a plane-symmetric structure with each other, and the uniting step is a state in which the two joint parts are arranged in a point-symmetric manner with respect to each other. It is a process performed.

Moreover, as for the said unification process, all the welding parts are linear.
The connecting portion forming portion is a plate portion having a square outer shape, and each plate portion is surrounded by an outer peripheral edge, and the bending step is performed in four directions by four bent outer peripheral edges generated by bending. An outer peripheral edge of a predetermined adjacent plate part that is one of the surrounded core plate part, four adjacent plate parts adjacent to the core plate part via the bent outer peripheral edge, and the adjacent plate part One peripheral plate part adjacent via the predetermined adjacent plate part and the other adjacent one via the outer peripheral edge of one of the two adjacent plate parts arranged adjacent to each other Out of a total of four vertical outer peripheries extending outward from both ends of the outer peripheral edge of the peripheral plate part and the outer peripheral edge of the two peripheral plate parts adjacent to the peripheral plate part. The vertical length of one of the two opposed vertical outer edges One extension plate part adjacent to one of the corresponding peripheral plate parts via the outer peripheral edge, and one of the remaining four vertical outer peripheral edges of the four vertical outer peripheral edges. And the other extension plate portion adjacent to one of the corresponding peripheral plate portions, and forming a joint component in which these plate portions are integrally connected.
Furthermore, the inner surface and the outer peripheral surface of the plate portion that is the coupling portion forming portion are square, and the blank material manufacturing process includes a core region corresponding to the square core plate portion and four squares adjacent to the core region. An adjacent region corresponding to the adjacent plate portion, one peripheral region corresponding to one peripheral plate portion adjacent to the outside of any one adjacent region, and the other peripheral plate portion adjacent to the outside of the predetermined adjacent region A blank material having one peripheral region corresponding to the other expansion region, one expansion region corresponding to one expansion plate portion, and the other expansion region corresponding to the other expansion plate portion, and these regions being integrally connected. It is a manufacturing process.

  Yet another invention according to the present application is a method for manufacturing a joint assembly, wherein the connecting portion formed in the connecting portion forming step of the joint manufacturing method described above is a connecting hole, Inserting a bolt into the coupling hole so that the male screw portion protrudes outward, and extrapolating an elastic body to the male screw portion protruding outside the outer peripheral surface of the coupling portion forming portion; And a step of screwing a nut that presses the elastic body against the outer peripheral surface side into the male screw portion on which the elastic body is extrapolated, and a method of manufacturing a joint assembly, wherein the elastic body is The connecting end portion of the connected member is screwed into the male threaded portion into which the nut pressed against the outer peripheral surface is screwed, and the connecting end is brought into contact with the nut and tightened. In the consolidated Part can a fastening and fixing to the joint.

  Yet another invention according to the present application is a method for manufacturing a joint assembly, wherein the connecting portion formed in the connecting portion forming step of the joint manufacturing method described above is a connecting hole, A method of manufacturing a joint assembly, further comprising a step of inserting a bolt into the coupling hole so that the male screw portion protrudes outward, and is connected to the male screw portion of the bolt. An insertion hole of a connecting end provided in the member is extrapolated, and the connecting end can be fastened and fixed to the joint by screwing a nut into a tip of the male screw passing through the insertion hole. .

Since the joint and the joint assembly is an invention of the present application is a simple structure, excellent in handling property lightweight, and easily, can be produced as rapid and stable quality.

It is a front view which shows the joint of an Example. It is a perspective view which shows the joint of FIG. It is a perspective view which shows the joint assembly by which the volt | bolt was mounted | worn with the joint of FIG. It is a top view which shows the blank material for joint component manufacture used for the joint manufacture of FIG. It is a front view which shows the joint components used for manufacture of the joint of FIG. FIG. 6 is a plan view showing a state in which one P1 of the pair of joint parts P1, P2 shown in FIG. It is explanatory drawing which shows an example of the truss structure using the joint of FIG. It is explanatory drawing which shows the joint procedure and joint structure of a joint and a beam. It is explanatory drawing for demonstrating regarding the fall in a blank material manufacturing process. It is explanatory drawing for demonstrating regarding the process in a bending process. (A) is an exploded explanatory drawing for demonstrating the structure of the joint assembly of another aspect, (B) is the procedure which connects the connection end part of the blade member of a beam to the joint assembly of another aspect. It is explanatory drawing for demonstrating. It is explanatory drawing for demonstrating the state which couple | bonded the beam with the joint assembly of another aspect.

10 ... Joint, 11 ... Joint assembly,
20, 20a, 20b ... plate portion (outer peripheral member, coupling portion forming portion, coupling portion),
21 ... Outer surface (outer peripheral surface), 22 ... Inner surface, 23,24 ... Outer peripheral edge, 25 ... Hole (coupling hole, coupling part),
30 ... penetrating part (through hole) , 40 ... bolt (connecting member), 41 ... bolt part, 42 ... head part,
50: Beam (member to be connected), 50a, 50b ... Blade member,
51 ... Bolt hole for mounting beams (tubular connection end),
51a: End face of the connecting end, 52 ... Nut for fixing the beam,
B ... Blank material, P, P1, P2 ... Joint parts, W, W1, W2, W3 ... Welding part (joining position),
α ... Outer surface angle.

Next, the joint according to the present invention will be described.
This joint can be used, for example, as a coupling member to which a plurality of beams 50 are coupled in a truss structure (see FIG. 7) described later.
As shown in FIGS. 1 and 2, the joint 10 includes a plurality of outer peripheral members 20 (20a, 20b) disposed on the outer peripheral portion.
Each outer peripheral member is a rectangular (more specifically, a square) plate-shaped member. Therefore, the outer peripheral member is hereinafter referred to as a plate portion 20.
Each plate part 20 is provided with the outer surface 21 and the inner surface 22 located in the back side (inner side) of the outer surface 21 (refer FIG. 5). The outer shapes of the plate portions 20 are the same shape (that is, a square), and the outer surfaces 21 and the inner surfaces 22 of the plate portions 20 are also square.
Each plate portion 20 has four outer peripheral edges. Among them, the first plate portion 20a is adjacent to the adjacent plate portion 20b via the outer peripheral edge 23 in all of the four outer peripheral edges 23. The second plate portion 20b is adjacent to the adjacent plate portion 20a via the outer peripheral edge 23 with respect to two of the four outer peripheral edges 23 and 24.
Thus, the joint 10 has a structure composed of a plurality of plate portions 20 arranged on the outer peripheral portion. It can also be said that the internal space S of the joint 10 is surrounded by a plurality of plate portions 20.
The joint 10 is composed of 18 plate portions 20. Of the 18 plate portions 20, there are 6 first plate portions 20a and 12 second plate portions 20b. And each board part 20 has the same external shape. That is, it can be said that the joint 10 is composed of only the plate portion 20 having the same shape.

As shown in FIGS. 1 and 2, an angle α (hereinafter referred to as an outer surface angle) between the outer surfaces of both plate portions 20a and 20b adjacent via the outer peripheral edges 23 and 24 is an angle larger than 180 degrees. is there. The outer peripheral edge 23 located at the connection position (boundary position) between the adjacent plate portions 20a and 20b is a position where the outer plate 23 is folded toward the outside of the joint when the adjacent plate portions 20a and 20b are bent. At the position of the outer peripheral edge 23, a ridge line L (23) is formed. That is, the folding structure on the outer periphery of the joint 10 is a convex structure formed by mountain folding (a structure protruding outward), and there is no concave portion such as a valley folding structure. It can also be said that the outer surface of each plate portion 20 is located on the outermost periphery and is the outermost surface of the joint 10. The joint 10 according to the present embodiment, which has excellent visibility of the outer peripheral surface and has a minimum blind spot when the operator visually recognizes it by hand, has excellent handleability and maintenance.
In addition, if there is no concave portion on the outer periphery, it is reliably prevented that rainwater accumulates in the case of outdoor installation, so it can be said that the durability is excellent. Particularly, as will be described later (see FIGS. 7 and 8), the joint 10 is attached to both ends of the beam 50, and the beam 50 constituting the truss structure is inclined with respect to the horizontal plane. However, there is a possibility that rainwater or dew condensation water may flow into the one arranged at the lower connection end of the beam 50, and if it has a concavo-convex structure, water tends to accumulate there. In this respect, the joint 10 is excellent in drainage performance as described above, and is extremely excellent as a joint used in a truss structure or the like constructed outdoors.

  Each plate portion 20 includes a hole 25 penetrating the plate portion 20 from the outside of the joint 10 toward the internal space S. In the present embodiment, the hole 25 is formed in the center part of each plate part 20a, 20b (position including the intersection of diagonal lines). As will be described later, the hole 25 is used for attaching the bolt 40, and is a connecting end portion of a blade member 50a used for connecting a beam 50 (see FIGS. 7 and 8) constituting the truss structure. Used to connect 51 and joint 10.

The joint 10 includes a triangular through portion 30 surrounded by outer peripheral edges 24 of the three second plate portions 20b. The sizes of the second plate portions 20b are the same, and the lengths of the outer peripheral edges 24 are the same. That is, the penetration part 30 is an equilateral triangle. In addition, the number of the penetration parts 30 is eight.
Each through portion 30 communicates with the internal space S of the joint 10 from the outside of the joint 10. That is, the internal space S can be visually recognized from the outside of the joint through the penetration part 30. And from any penetration part 30, the inner surface 22 of all the board parts 20a and 20b can be visually recognized, and the opening edge inside all the holes 25 can be visually recognized. Since the outer surface 21 and the inner surface 22 of each plate part 20 are both flat, the visibility is excellent. As described above, the joint 10 is excellent not only in the outer side but also in the inner side, and in this respect, it is extremely excellent in handling and maintenance.
Since the joint 10 has a structure in which the inner surface 22 is not uneven and has the through portion 30, the drainage performance of the internal space S is excellent. Therefore, even in the case of outdoor installation, it is a structure that reliably prevents rainwater from accumulating inside the joint, and can be said to have excellent durability.
Further, the joint 10 used outdoors is preferably a structure corresponding to the temperature rise and fall, but more specifically, the joint 10 is preferably a structure corresponding to a temperature change caused by so-called radiation cooling. When dew condensation occurs due to a temperature drop caused by radiation cooling or the like, moisture adheres to the joint surface. Since this moisture may cause corrosion, a joint structure capable of maintaining a state where moisture is not attached as much as possible is preferable. In this respect, the joint 10 having the penetrating portion 30 is excellent in air permeability, and even if moisture adheres due to condensation, it is possible to dissipate water by ventilation and is excellent.
By the way, condensation due to radiation cooling or the like causes moisture to adhere to the entire surface of the joint. Focusing on this point and examining a more preferable structure for joints used outdoors, even if the air permeability of the entire joint is improved, it is not always easy to dissipate moisture adhering to the gap structure part. We understood that consideration about point was important. In this regard, the joint 10 is a structure assembled by bending processing in which all bending angles are obtuse angles and welding for joining a pair of joint parts P1 and P2, as will be described later. The structure is visible from both the outer surface side and the inner surface side of the joint 10, and the inner surface angle β (= 360 ° −α) between the outer peripheral edges of the plate portions 20 and 20 to be welded to each other is the bending angle. Similarly, the obtuse angle and the part where the pair of joint parts P1 and P2 are in contact with each other is the structure of only the welded part, and there is no surface contact part (in other words, the structure in which the gap structure is eliminated) Therefore, it is an excellent structure that can quickly and surely remove moisture adhering to the surface due to condensation.

Further, as described above, the joint 10 of the present embodiment is used, for example, in a connecting portion of a truss structure (see FIGS. 7 and 8). The truss structure is a structure composed of beams 50 with many gaps, so it is a structure with excellent visibility of the strength members of the truss structure, but when using a conventional solid spherical joint, the joint part It was a structure with poor visibility.
In this respect, the joint 10 of the present embodiment is excellent in visibility of the outer periphery and the interior as described above, and is suitable as a joint used in the truss structure in this respect. Furthermore, the joint 10 of the present embodiment is hollow and lightweight, and in this respect as well, since it has an affinity with the truss structure that is characterized by being lightweight, it is suitable as a joint used in the truss structure.

When the joint 10 is used in a truss structure or the like, bolts 40 are installed in appropriate holes 25 as shown in FIG. The bolt 40 is mounted in a direction in which the bolt portion 41 protrudes from the inside to the outside of the hole 25. In the joint 10 of this embodiment, a female screw is formed on the inner peripheral surface of the hole 25 (not shown), the head portion 42 of the bolt 40 is disposed inside the joint 10, and the bolt portion 41 protrudes outside the joint 10. The bolt 40 is fixed by being screwed into the hole 25 while the joint assembly 11 is formed. For example, the joint assembly 11 is used as a joint portion of a truss structure in the state shown in FIGS.
The structure for fixing the bolt 40 is not limited to the screwed structure. For example, the structure in which the bolt 40 is welded to the plate portions 20a and 20b, and the beam 50 and the bolt with the plate portions 20a and 20b sandwiched between the nut 52 and the bolt 40 for fixing the beam 50, which will be described later, fastened to the joint 10. By fastening 40, a structure in which the joint 10, the bolt 40, and the beam 50 are integrally fixed can be exemplified (see FIGS. 7 and 8).

  Next, a method for manufacturing the joint 10 will be described, and the structure of the joint will be described in more detail.

First, a steel plate used for joint manufacture is prepared.
And the prepared steel plate is processed and the two blank materials B and B shown by FIG. 4 are manufactured (blank material manufacturing process).
In this example, two blank materials B and B were obtained by punching. Both blank materials B and B have a shape that can be divided into nine square plate-like portions C, and have a hole D (25) at the center of each plate-like portion C. The formation of the hole D may be performed simultaneously with the blanking of the blank materials B and B, or may be performed before or after the blanking of the blank materials B and B. When the bolt 40 is fixed by screwing, a female screw is formed in the hole D as necessary. Note that the broken lines shown in the blanks B and B in FIG. 4 are shown for convenience in explanation of the folding position in the folding process described later, and may be omitted in practice.
As shown in the figure, the blank materials B and B have a vertically symmetrical structure. In other words, both blank materials B, B have the same shape when one blank material B is turned over. In this example, blanks B and B are manufactured using steel plates having the same performance on both front and back surfaces, that is, steel plates without back and front surfaces. Therefore, if one type of blank material B is manufactured, a set of blank materials having a vertically symmetric structure can be prepared simply by turning one side upside down.

Next, each blank material B, B is processed to produce a pair of joint parts P1, P2 shown in FIGS. Here, joint parts P1 and P2 were manufactured by bending (bending process).
A bending process is a process which bends the broken-line part (refer FIG. 4) of each blank material B and B. FIG. As a result, nine square plate portions 20 surrounded on the four sides by the outer peripheral edges 23 and 24 are generated. Also, the workpiece (blank material) becomes a three-dimensional shape by bending, and has a concave side region surrounded by the plate part 20, and for each plate part 20, the outer surface 21 opposite to the concave side region and An inner surface 22 facing the concave region.
Further, as described above, the two blank materials B and B used for manufacturing the joint 10 have the same shape when one of them is turned over. Therefore, a set of joint parts P1 and P2 can be manufactured by preparing the same blank material B and setting the direction of bending to the opposite sides. That is, the set of manufactured joint members P1 and P2 have a plane symmetrical structure (mirror structure), and if one of them is rotated 180 degrees, it has a point symmetrical structure.

  The bending process can also be said to be a process of forming joint parts P1 and P2 having a structure in which the plate portions 20c, 20d1 to 20d4, 20e1, 20e2, 20f1, and 20f2 described below are integrally connected (FIG. 10).

In FIGS. 9 and 10, for convenience of explanation, reference numerals having a correspondence relationship are used only in FIG. 10. Therefore, even if the reference numerals used in FIG. 10 are used in other figures, they are not the same parts as those shown in FIG.
The term “outside” as used herein refers to the outside in the radial direction with the core plate portion 20c described below as the center. Therefore, when the outer peripheral edge of each plate part is described for the adjacent plate part 20d (20d1 to 20d4) and the peripheral plate parts 20e1 and 20e2, which will be described later, the outer peripheral edge close to the core plate part 20c is referred to as the inner outer peripheral edge. The outer peripheral edge far from the portion 20c may be referred to as an outer outer peripheral edge, and the outer peripheral edge between the inner outer peripheral edge and the outer outer peripheral edge may be referred to as a vertical outer peripheral edge (or an orthogonal outer peripheral edge). One end (one end) is in contact with the inner outer periphery, and the other end (the other end) is in contact with the outer outer periphery. Furthermore, the bending outer peripheral edge to be described later is a ridge line (bending ridge line) L formed by bending between two plate portions of the joint component that are integrally connected via the outer peripheral edge. A ridge line formed by welding may be referred to as a welding ridge line.

  That is, the bending process is performed by one square core plate part 20c surrounded by four bending outer peripheral edges 23a1 to 23a4 generated by the bending process, and the core plate part 20c via the bent outer peripheral edges 23a1 to 23a4. Four adjacent plate portions 20d (20d1 to 20d4) adjacent to each other and an outer peripheral edge (outside bent) of a predetermined adjacent plate portion 20d (the adjacent plate portion 20d1 in FIG. 10) which is one of the adjacent plate portions 20d. Any one of the two adjacent plate portions 20d2 and 20d4 arranged adjacent to one peripheral plate portion 20e1 adjacent via the outer peripheral edge 23b and the predetermined adjacent plate portion (adjacent plate portion 20d1 in FIG. 10). The other peripheral plate portion 20e2 adjacent to the other peripheral plate portion 20e2 via the outer peripheral edge (outer bent outer peripheral edge) 23c of one adjacent plate portion (20d2 in FIG. 10), and the four vertical positions of the two peripheral plate portions 20e1, 20e2 Two opposing vertical outer peripheral edges (see FIG. 10) of the outer peripheral edges 23d, 23e, 24a, 24b arranged opposite to each other. Is one extension plate portion 20f1 adjacent to any one of the peripheral plate portions through one of the vertical outer peripheral edges (the vertical outer peripheral edge 23e in FIG. 10) of the vertical outer peripheral edges 23e, 24a), and the four One of the vertical outer peripheral edges (the remaining two vertical outer peripheral edges (vertical outer peripheral edges 23d and 24b in FIG. 10)) of the vertical outer peripheral edges 23d, 23e, 24a, and 24b. In FIG. 10, in the process of forming joint parts P1 and P2 having the other extension plate portion 20f2 adjacent to one of the peripheral plate portions via the vertical outer peripheral edge 23d) and these plate portions are integrated. It can be said that there is. In this bending step, one vertical outer peripheral edge (opposite vertical outer peripheral edge 24a in FIG. 10) of the other peripheral plate part 20e2 adjacent to one expansion plate part 20f1 and the vertical outer peripheral edge (opposite vertical outer periphery in FIG. 10). Three plate portions (two adjacent plate portions 20d1 and 20d2 and one expansion plate portion 20f1 in FIG. 10) are adjacent to a predetermined outer peripheral edge 24c of the one extended plate portion 20f1 that can contact the peripheral edge 24a). A predetermined corner portion (corner portion 20fa in FIG. 10) of the other extension plate portion 20f2 that is formed with a penetrating structure corresponding to the penetrating portion 30a surrounded by the outer peripheral edge of the other expansion plate portion 20f2. Of the adjacent plate portion adjacent to the other extended plate portion 20f2 (in FIG. 10, the other adjacent plate portion 20d4 of the two adjacent plate portions 20d2 and 20d4 arranged adjacent to the predetermined adjacent plate portion 20d1) A predetermined corner portion (corner portion 20da in FIG. 10) is adjacent to three plate portions (in FIG. 10, two adjacent plate portions 20d1, 20d4 and Penetrating structure corresponding to the penetrating portion 30b surrounded by the outer peripheral edge of the square extension plate portion 20f2 of) is formed.

Further, the bending process can be explained as follows. That is, in the bending process, a plurality of (9 in the embodiment) square plate portions (for example, the plate portions 20c, 20d1 to 20d4, 20e1, 20e2, 20f1, and 20f2 in FIG. 10) surrounded by the outer periphery are integrated. At least one plate part in which a plurality of outer peripheral edges of the four outer peripheral edges surrounding each plate part are outer peripheral edges (bending outer peripheral edges) generated by a bending process. In FIG. 10, it is a process of bending so as to include four plate portions 20c, 20d1, 20d2, 20e1), and has a corner portion k (see FIG. 10) located at a contact point (vertex) between two adjacent outer peripheral edges. This is a process of bending the plate portion so as to include at least one plate portion (two plate portions 20c and 20e1 in FIG. 10). And this corner | angular part k has two vertical outer peripheral edges (in FIG. 10, it extends in the opposite side of the above-mentioned two bent outer peripheral edges (in FIG. 10, bent outer peripheral edges 23a3, 23a4) which one end touches the said corner part k. It is also in contact with the longitudinal outer peripheries 24d, 24e). The bending process forms a bending outer peripheral edge (bending outer peripheral edge) 23, and at the same time, two of the three sides of the two vertical outer peripheral edges 24d, 24e, one end of which is located at the corner k, surround the through portion 30. Is a step of bending to a position where can be configured.
Further, the bending process can be said to be a process of generating at least one square core plate portion 20c surrounded on all sides by the bending outer peripheral edges 23a1 to 23a4 generated by the bending process. And at least any one (all in the embodiment) of the corners k selected from the four corners k of the square formed by the four bent outer peripheral edges 23a1 to 23a4 is in contact with one end of the corner k. It is also in contact with two vertical outer peripheral edges (vertical outer peripheral edges 24d and 24e in FIG. 10) extending opposite to the two bent outer peripheral edges (for example, the bent outer peripheral edges 23a3 and 23a4 in FIG. 10). In the bending process, a bending outer peripheral edge (bending outer peripheral edge) 23 is formed, and at the same time, two of the two vertical outer peripheral edges whose one end is in contact with each of the four corners k of the core plate portion 20c surround the penetrating part 30. This is a step of bending the side to a position where it can be configured. That is, the bending process forms the outer peripheral edge of the bending and at the same time, the other end of the two vertical outer peripheral edges (for example, the vertical outer peripheral edges 24d and 24e in FIG. 10) (for example, the end portion 23da in FIG. 10). , 23ea) is processed so that the distance between the vertical outer peripheral edges 24d and 24e is equal to the length.

  Therefore, as shown in FIG. 9, the blank material manufacturing process for manufacturing the blank material to be bent as described above includes a core region 120c corresponding to the square core plate portion 20c and 4 adjacent to the core region 120c. Adjacent areas 120d1 to 120d4 corresponding to two square adjacent plate portions 20d1 to 20d4 and one periphery corresponding to one peripheral plate portion 20e1 adjacent to the outside of any one adjacent region (adjacent region 120d1 in FIG. 9) Region 120e1, the other peripheral region 120e2 corresponding to the other peripheral plate portion 20e2 adjacent to the outside of the predetermined adjacent region (adjacent region 120d2 in FIG. 9), and one expansion region corresponding to one expansion plate portion 20f1 It can be said that this is a step of manufacturing a blank material having 120f1 and the other extension region 120f2 corresponding to the other extension plate portion 20f2, and these regions are integrally connected.

Next, the joint 10 is manufactured by combining the pair of joint parts P1 and P2.
Here, a set of joint parts P1 and P2 were fixed to each other by welding to produce the joint shown in FIG. 1 (merging process).
Here, as shown in FIG. 5, a set of joint parts P1 and P2 face each other so that the inner sides (concave sides) face each other, and the shapes of the joint parts P1 and P2 are arranged so as to coincide with each other in point symmetry. Then, they were produced by welding at a plurality of joint positions W (W1, W2, W3).
More specifically, in the union process, first, a set of joint parts P1 and P2 are arranged facing each other so that the inner sides (concave sides) face each other, and the inner space S that is finally formed is formed. It can be said that it is a step of performing a step (arrangement step) of arranging a pair of joint parts P1, P2 so as to be point-symmetric about the center point of the center, and then performing a welding step. In other words, this arrangement step is such that the peripheral plate portions 20e1, 20e2 and the extended plate portions 20f1, 20f2 included in each set of joint parts P1, P2 are alternately and annularly arranged. It can be said that this is a process of arranging a set of joint parts P1, P2 in a combined state. Thereafter, the joint 10 can be manufactured by welding the six outer peripheral edges of the pair of joint parts P1, P2 arranged in this way (welding process). That is, the joint 10 of the present embodiment can be easily manufactured using welding.
As described above, the arranging step is a step of arranging the outer peripheral edges of the adjacent plate portions 20 so as to be in contact with each other, and a pair of joint parts P1, P2 are contacted at the line contact portion between the outer peripheral edges. It is a process of arranging with a small contact area between the joint parts, and a process of arranging without a surface contact portion between the pair of joint parts P1 and P2 and having no gap structure. .

  As described above, the joint 10 according to the present embodiment is assembled by the bending process in which all the bending angles are obtuse and the welding process for joining the pair of joint parts P1 and P2, and all the parts of the welded part are joined. The inner surface angle β (= 360 ° −α) of the linear joint portion of the outer peripheral edge of the plate portions 20 and 20 that are in line contact with each other at the outer peripheral edge is a structure that is visible from both the outer and inner sides. The obtuse angle is the same as the processing angle, and the contact part of the set of joint parts P1 and P2 is only the welded part, so that the contact area between the joint parts is as small as possible. The gap structure (surface contact structure) is eliminated, and it is an excellent structure in which moisture adhering to the outer peripheral surface of the joint due to condensation can be quickly and reliably eliminated.

Further, in the joint 10 having the structure of the present embodiment, since the welding parts W are all linear, welding can be performed very easily and quickly. For example, in the welding process, after performing temporary welding for temporary fastening, there is a case of performing main welding to be firmly fixed, but since all the welding parts W are linear, either temporary welding or main welding is performed. The process is also excellent in workability. In addition, since the through portion 30 is provided, the welding site W can be easily viewed from the back side, and accurate welding can be performed more easily and reliably. Thus, it can be said that the joint 10 of the present embodiment has a structure that is excellent in manufacturing workability and excellent in ease of maintenance.
Furthermore, in the joint 10 having the structure of the present embodiment, the direction of the linear welded portion W is not one direction, but there are welded portions W1 and W2 in a plurality of directions (see FIG. 5). As described above, when there are a plurality of directions of the linear welded portion W, the positioning of the joint components P1 and P2 can be facilitated and the positioning accuracy can be improved more easily. The joint 10 is a member that is required to have as high a strength as possible, and such a structure is preferable because it contributes to an improvement in welding strength and eventually joint strength.

  In addition, as FIG. 5 shows, each joint component P1, P2 has the part W3 which the outer periphery of the two board parts which comprise the same joint component contact | connect (refer FIG. 5). Although it is possible to manufacture a joint without welding about this portion, it is preferable that this portion is also welded in this coalescence process from the viewpoint of strength and the like.

Next, manufacture of the joint assembly 11 will be described.
In manufacturing the joint assembly 11, a process of fixing the bolt 40 in the hole 25 of the plate portion 20 of the joint 10 is performed (bolt mounting process).
As the timing for performing the bolt mounting process, it is possible to mention first after the folding process and before the coalescence process. In this case, in the bolt mounting process, the bolt 40 is fixed to the hole 25 of each joint component P1, P2. In this embodiment, a screwed structure is used. At this time, the bolts 40 may be fixed to all the holes 25, or the bolts 40 may be fixed only to the holes 25 selected as necessary. The method for fixing the bolt 40 is not limited to screwing. For example, a structure in which the plate portions 20a and 20b are clamped by a bolt head portion 42 and a nut 52 for fixing the beam 50 (see FIG. 7) and a fixing structure by welding can be given. As the welding structure, for example, a method of fixing the head portion 42 of the bolt 40 to the inner surface 22 of the plate portion 20 with the bolt portion 41 of the bolt 40 protruding outward from the hole 25 can be exemplified.
Moreover, after completion of joint manufacture can be given as another time for performing the bolt mounting process.
Since the joint 10 of the present embodiment includes the through portion 30, the through portion 30 can be used to supply components such as bolts and nuts to the internal space of the joint 10 and fix the bolt to the joint. . Also in this case, the above-described structure can be used as a structure for fixing the bolt.

In addition, when manufacturing a joint, it is preferable to perform the process of apply | coating a rust inhibitor (rust prevention process, rust prevention process).
When manufacturing joints 10 using materials that do not rust, this is not necessarily a necessary process, but if a rust prevention process is performed as necessary, joints can be used even in outdoor environments where rust is likely to occur. The durability of can be improved.
The timing for performing the rust prevention step can be any timing such as after the folding step or after the coalescence step. However, if it is performed before the coalescence configuration, the welded portion cannot be rusted. In addition, the coating film may be peeled off during the work after the rust prevention process. In view of this, the rust prevention process is more preferably as far back as possible, for example, after the coalescence process.
In this example, the rust prevention process was performed by a method of immersing the joint 10 or joint parts P1 and P2 to be rust prevention in a rust inhibitor. According to this method, the rust inhibitor can be applied easily, quickly and reliably over the entire coated surface.

As described above, the joint 10 includes the through portion 30. Therefore, even when the rust prevention process is performed on the joint 10, the inside of the joint can be easily, quickly and reliably rusted simply by immersing the joint in the rust inhibitor. Furthermore, since the joint is provided with holes in each plate portion and has a large number of holes as a whole, this point can also be said to contribute to the flowability of the rust inhibitor. Moreover, as above-mentioned, since the outer surface and inner surface of each board part which comprise a joint are all planes and there is no recessed part, a rust inhibitor does not accumulate.
Further, as described above, the joint 10 has a structure in which the contact portion of the pair of joint parts P1 and P2 constituting the joint is only the welded portion, and the contact area between the joint parts is reduced as much as possible. Therefore, the gap structure (surface contact structure) is eliminated from the entire joint, and the rust inhibitor can be easily, quickly and reliably applied to the entire outer peripheral surface of the joint 10. As described above, the joint 10 is excellent in the application performance of the rust preventive agent in the manufacturing stage, and is excellent in the divergence of the condensed water adhering to the outer peripheral surface of the joint as described above, and is suitable for the joint everywhere. It can be said that it has a configuration.

Next, the use of the joint 10 will be described (see FIGS. 7 and 8).
The bolt 40 of the joint 10 described here is a part to which a nut 52 for fixing the beam 50 (the connecting end portion 51 of the blade member 50a attached thereto) to the joint 10 is attached. The bolt 40 is attached to the hole 25 in a state in which a bolt part (male thread part) 41 projects toward the outside of the outer peripheral surface. The end face of the connecting end 51 is a flat surface, and the connecting end 51 is formed with a bolt hole (insertion hole) that is externally inserted into the bolt part 41. The length of the bolt hole portion of the connecting end portion 51 is such that when the end surface of the connecting end portion 51 is brought into contact with the outer peripheral surface while the male screw portion is inserted through the bolt hole portion, the bolt portion 41 has the bolt hole portion. It is the length to penetrate.
Therefore, in a state where the bolt hole portion of the connecting end portion 51 is inserted into the bolt portion 41, the nut 52 is fastened to the bolt portion 41 of the bolt 40 that penetrates the connecting end portion 51, and the plate portions 20a, 20b (and the connecting end portion). 51), the joint 10 and the beam 50 (the connecting end portion 51 of the blade member 50a fixed to the beam 50) can be fixed integrally. In the following description, the beam 50 to which the blade member 50a is attached may be simply referred to as the beam 50.
FIG. 7 shows a structure in which the joint 10 is used as a member for connecting the beams 50 (the connecting end portion 51 of the blade member 50a attached to the end portion) constituting the truss structure. In this case, as shown in the drawing, the beam 50 (the connecting end portion 51 at the end thereof) is connected to the joint 10 using the bolt 40 attached to the joint 10.
Incidentally, in the joint 10 of this embodiment, a hole 25 used for fixing the bolt 40 is formed in the center of the plate portion 20. That is, the opening end outside the hole 25 is disposed at a position surrounded by a plane, and the bolt portion 41 of the bolt 40 protrudes outward from the center of the flat plate portion 20. Therefore, when the truss structure beam 50 (the connecting end portion 51 of the end portion) is connected to the joint 10, the work of fixing the end portion of the beam 50 (the connecting end portion 51) to the joint 10 and the positioning operation are facilitated. It can be carried out.
In addition, since the outer surface 21 of the plate portion 20 is a flat and outermost peripheral surface, when connecting the end portion of the beam 50 and the joint 10 with a work tool such as a spanner, a connection operation or the like is performed. The workability is extremely excellent. Further, when the outer surface 21 is the outermost peripheral surface of the joint 10, when the end surface 51a of the connection end 51 of the beam 50 is brought into contact with the outer surface 21 to connect the beam 50 to the plate portion 20, the connection end 51 The size (area) of the end surface 51a can correspond to various sizes. That is, the end surface 51a may be larger than the outer surface 21 (for example, the size may protrude from the outer surface 21). Even if the size of the end surface 51a is larger than the outer surface 21, the beam 50 can be connected to the joint 10.

  In addition, as described above, the joint 10 has a through-hole 30 and does not have a gap structure (surface contact structure). Therefore, the joint 10 has excellent air permeability and drainage, and diverges moisture adhering to the outer peripheral surface. It also has excellent performance, and is extremely excellent as a joint that is used even outdoors, where condensation water adheres to the outer peripheral surface of the joint, and inflow of moisture such as rainwater that adheres to the outer peripheral surface of the beam.

  In addition, since the punching process, bending process, welding process, and rust prevention process described above can be performed using a well-known processing method, detailed description is omitted here.

In addition, the joint which concerns on this invention, and its manufacturing method are not restricted to the said Example. Joints, manufacturing methods, and the like that have been modified without departing from the spirit of the present invention are included in the scope of the present invention.
For example, it is not limited to an octahedron. Further, the outer surface angle α of the joint 10 in the above embodiment is an angle larger than 180 degrees (for example, 225 degrees) at any outer peripheral edge, but the outer surface angles at the positions of the outer peripheral edges may not be the same. .
The structure having the through portion 30 is preferable in that the inner surface is easily visible, and the configuration not including the through portion is preferable in terms of easy realization of a more robust structure.
Although the number of joint parts may be one or three or more, two is preferable. It is considered that high-precision joints can be easily and quickly manufactured.
When a joint is constituted by a plurality of joint parts, the joint may be constituted by using only joint parts constituted by the same number of plate parts, or a plurality of joint parts constituted by different numbers of plate parts are used. The joint may be configured.
Moreover, in the joint of a present Example, although the number of the ridgelines comprised by bending is larger than the number of the ridgelines welded, it may be below the number of the ridgelines welded.

  Further, the joint assembly and the manufacturing method thereof according to the present invention are not limited to the above embodiments. A joint assembly or manufacturing method having a structure modified within the scope of the present invention is included in the scope of the present invention. In addition, the same code | symbol is attached | subjected about the same structure as the above-mentioned joint assembly 11, and description about the common matter and structure was abbreviate | omitted.

For example, a joint assembly 11a configured as shown in FIG. After the assembly 11a is mounted in such a manner that a spring washer (elastic body) 43 is extrapolated to the bolt portion 41 of the bolt 40 of the joint assembly 11 described above (the bolt portion protruding outward from the outer surface of the plate portion 20). The joint assembly 11a can be manufactured by attaching the nut (hexagon nut) 44 and tightening the attached nut 44. The number of spring washers to be mounted may be one or two or more.
When this joint assembly 11a is used, the blade member 50b shown in FIGS. 11A and 11B can be used as the blade member 50b attached to the beam 50. The blade member has a connecting end welded to the main body of the blade member, and the connecting end 51b of the blade member 50b is a nut (high nut, screwed portion) that can be screwed into the bolt portion 41 of the bolt 40. (See FIG. 11B). Accordingly, the connecting end portion 51b having the female screw portion 51c is screwed into the bolt portion 41 of the bolt 40 so as to be pressed against the nut 44 fastened to the bolt 40, whereby the blade member 50a attached to the beam 50 ( Can be coupled to the joint assembly 11a (see FIG. 12).
By the way, when the connection end 51b of the beam 50 is screwed into the bolt 40 of the joint assembly 11a to fix the beam 50 to the joint assembly 11a, the beam 50 is firmly fixed to the joint assembly 11a. In order to achieve this, it is necessary to firmly screw in, so that the direction of the beam 50 relative to the bolt 40 (the screwing phase or the rotation phase) should be the desired direction (the desired screwing phase or the desired rotation phase). Not always easy.
However, the joint assembly 11a has a configuration in which the spring washer 43 is mounted as described above. With such a configuration, the range of nut tightening positions where a compression force can be applied to the spring washer 43 is wider than in the case where there is no spring washer.
Therefore, if the joint to be used is the joint assembly 11a, the direction of the beam 50 is the desired direction (screwing phase) when the joint end 11b of the beam 50 is pressed against the nut 44 of the bolt 40. Thus, by adjusting the tightening position of the nut 44, the direction of the beam 50 after the completion of screwing can be easily set to a desired direction (screwing phase). If the direction of the beam 50 can be set to a desired direction, it is extremely excellent in that the quality and appearance of the constructed truss structure can be further improved.

Claims (14)

A joint including a plurality of coupling portions to which the coupled members are coupled,
A joint characterized in that an outer peripheral surface of each joint portion forming portion in which each joint portion is formed is in contact with an outer peripheral surface of an adjacent joint portion forming portion via a mountain-folded ridge portion toward the outside. . The joint is formed by combining a plurality of parts by welding,
The joint according to claim 1, wherein the welding position is a position of the ridge portion. An internal space surrounded by a plurality of the joint forming portions, and a through hole communicating with the internal space from the outside of the joint;
The joint according to claim 1 or 2, wherein an inner side surface on the back side of the outer peripheral surface of each coupling portion forming portion is visible from the outside of the joint.   The joint according to claim 3, wherein there are a plurality of the through holes, and the inner side surfaces of all the coupling portion forming portions can be visually recognized from any through hole. A connecting member used for connecting the joint and the connected member can be attached to the joint portion of the joint according to any one of claims 1 to 4.
When connecting the member to be connected to the joint using the connecting member, the coupling portion between them is visible,
The coupling portion includes a coupling hole,
A bolt attached to the coupling hole in a state in which the male screw portion protrudes from the inside to the outside of the coupling hole, an elastic body extrapolated to the male screw portion of the bolt, and the elastic body of the coupling portion The coupling member comprising a nut that is screwed into the male screw portion in a state where it can be pressed against the outer peripheral surface of the coupling portion forming portion;
The male screw part into which the nut in a state of pressing the elastic body against the outer peripheral surface is screwed into the connecting end part of the connected member, and the connecting end part comes into contact with the nut. is not tightened can be fixed to the connecting end to said joint by tightening, di Yointo assembly. The coupling portion includes a coupling hole,
The coupling member comprising: a bolt that can be attached to the coupling hole in a state in which the male screw portion protrudes from the inside to the outside of the coupling hole; and a nut that can be screwed into the male screw portion of the bolt. And
An insertion hole of a connection end provided in the connected member is externally inserted into the male screw portion of the bolt inserted into the coupling hole, and the nut is attached to a distal end portion of the male screw portion passing through the insertion hole. The joint assembly according to claim 5 , wherein the connecting end portion can be fastened and fixed to the joint by being screwed. A method for manufacturing a joint including a plurality of coupling portions to which coupled members are coupled,
A blank material manufacturing process for preparing a plate-shaped blank material,
A bending process for producing a joint part by bending a plurality of prepared blanks;
A coalescing step of producing a joint by combining a plurality of the joint components;
A coupling portion forming step for forming the coupling portion, and
The bending step is a step of manufacturing a joint component including a plurality of connecting portion forming portions in which the connecting portion is formed by bending so that all mountain fold structures appear on any one outer surface side of the blank material.
The joint part forming portion of each joint component has a flat inner surface and outer peripheral surface,
The outer peripheral surfaces of the joint forming portions adjacent to each other of the joint parts are adjacent to each other via the ridges of the mountain fold toward the outside.
The coalescing step is a step of welding the outer peripheral edges of the two joint parts,
In the coalescing step, the inner space surrounded by the two joint parts is formed, and the two joint parts are combined so that the welded parts of both joint parts become ridges of mountain folds toward the outside. Is a process performed in a state,
The joint part forming step is a method for manufacturing a joint, wherein the joint part is formed in the joint part forming part. The blank material is two,
The two blank materials have the same shape and have one outer surface and the other outer surface of the same shape,
The bending step includes a step of manufacturing one joint part by bending so that a valley fold appears on one outer surface of one blank material, and a step of bending so that a valley fold appears on the other outer surface of the other blank material. The manufacturing method of the joint of Claim 7 including the process of manufacturing these joint components. The bending step is a step of manufacturing the two joint parts having a plane-symmetric structure with each other,
The joint manufacturing method according to claim 7 or 8, wherein the uniting step is a step performed in a state where the two joint parts are arranged in a point-symmetric manner with each other and combined.   The joint manufacturing method according to any one of claims 7 to 9, wherein in the coalescing step, all of the welding parts are linear. The coupling portion forming portion is a plate portion having a square outer shape,
Each plate part is surrounded by the outer periphery,
The bending step includes
A core plate part surrounded on all sides by four folding outer peripheral edges generated by bending;
Four adjacent plate portions adjacent to the core plate portion via the bent outer peripheral edge, and one peripheral adjacent to the outer peripheral edge of a predetermined adjacent plate portion that is one of the adjacent plate portions A plate part;
The other peripheral plate part adjacent via the outer peripheral edge of either one of the two adjacent plate parts arranged adjacent to the predetermined adjacent plate part;
Out of the total four vertical outer peripheral edges extending from both ends of the outer peripheral edge of the two peripheral plate portions adjacent to the peripheral plate portion, the two peripheral plate portions are arranged at positions facing each other. One extension plate part adjacent to any peripheral plate part corresponding to any one of the opposing vertical outer peripheral edges,
And the other extension plate portion adjacent to any one of the corresponding peripheral plate portions through the vertical outer periphery of any one of the remaining two vertical outer periphery of the four vertical outer periphery, and these The manufacturing method of the joint as described in any one of Claims 7-10 which is a process of forming the joint components in which the board part of this is connected integrally. The inner surface and the outer peripheral surface of the plate portion that is the coupling portion forming portion are square,
The blank material manufacturing process includes a core region corresponding to a square core plate portion, an adjacent region corresponding to four square adjacent plate portions adjacent to the core region, and one adjacent to the outside of any one adjacent region. One peripheral region corresponding to the peripheral plate portion, the other peripheral region corresponding to the other peripheral plate portion adjacent to the outside of the predetermined adjacent region, one expansion region corresponding to the one expansion plate portion, The manufacturing method of the joint according to claim 11, which is a step of manufacturing a blank member having the other extension region corresponding to the other extension plate portion and connecting these regions integrally. The joint part formed in the joint part forming step of the joint manufacturing method according to any one of claims 7 to 12 is a joint hole,
A step of inserting a bolt into the coupling hole so that the male screw portion protrudes outward in the coupling hole;
Extrapolating an elastic body to the male threaded portion protruding outside the outer peripheral surface of the coupling portion forming portion;
A step of screwing a nut that presses the elastic body against the outer peripheral surface side into the male screw portion on which the elastic body is extrapolated, and a method of manufacturing a joint assembly,
In the male screw portion into which the nut in a state of pressing the elastic body against the outer peripheral surface is screwed,
A joint assembly that can be fastened and fixed to the joint by screwing a connecting end provided in the connected member and bringing the connecting end into contact with the nut and tightening the connecting end. Manufacturing method. The joint part formed in the joint part forming step of the joint manufacturing method according to any one of claims 7 to 12 is a joint hole,
A method of manufacturing a joint assembly, further comprising a step of inserting a bolt into the coupling hole so that the male screw portion protrudes outward in the coupling hole.
An insertion hole of a connection end provided in the connected member is externally inserted into the male screw portion of the bolt, and a nut is screwed into a distal end portion of the male screw portion passing through the insertion hole, whereby the connection A method for manufacturing a joint assembly, wherein the end can be fastened and fixed to the joint.